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參數(shù)資料
| 型號： | FAN8048 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 2 DC-DC Converter & 4-CH PWM Motor IC |
| 中文描述： | DISK DRIVE MOTOR CONTROLLER, 0.5 A, PDSO48 |
| 封裝： | 7 X 7 MM, LQFP-48 |
| 文件頁數(shù)： | 11/34頁 |
| 文件大?。?/td> | 903K |
| 代理商： | FAN8048 |
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FAN8048
11
1-4. Power-On Reset (POR) Function
FAN8048 has two DC-DC converters to supply stable power to external circuits and components of the CD player set.
Therefore, for these output voltages of DC-DC converters to provide stable power to external circuits and their components,
the DC input voltage,VIN, and the output voltages of converter, VSYS1 and VSYS2, monitoring function is required.
The DC input voltage, VIN, and the output voltage of converter2 are individually divided by the internal resistors and then
compared with the internal 0.5V reference voltage, VREF2, to determine the low voltages condition.
This power on reset (POR) circuit is shown in Figure2.
Figure 2. Block Diagram of Power On Reset
1-5. Power Sequence
The following graph and flowchart of Figure 3 and Figure 4 show the power sequence of the VG converter and two DC-DC
converters (DC-DC converter1 and DC-DC Converter2); herein, VG converter generates power for internal circuits and upper
side output power switches of the 4 channels H-bridge driver, and the DC-DC converters supply the external circuits and com-
ponents.
Figure 3. Plot of Power Sequence
RST
Vref2
14
22
2
18
VSYS1
VSYS1
VSYS2
VIN
RST
V
SYS1
V
RST
V
SYS2
V
G
=7.0V
t
Voltage
3.9V
1.35V
Converter 1
Wake-up
Reset Signal
Hysteresis
Converter 2
Wake-up
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| FAN8082D | Bi-directional DC Motor Driver |
| FAN8082DTF | Bi-directional DC Motor Driver |
| FAN8082 | Bi-directional DC Motor Driver |
| FAN8100MTC | Low Voltage/Low Saturation 2-CH DC Motor Driver |
| FAN8100MTCX | Low Voltage/Low Saturation 2-CH DC Motor Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN8060 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:1.2MHz, 1A Synchronous Step-Down DC/DC Regulator |
| FAN8060EMPX | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2MHz, 1A Sync Step Down DC/DC RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| FAN8082 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DC Motor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8082D | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DC Motor Driver Bi Directional RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8082DTF | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DC Motor Driver Bi Directional RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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